Preparation and characterization of loess sediment for use as a reference material in the annual radiation dose determination for luminescence dating

F. De Corte; D. Vandenberghe; S. Hossain; A. De Wispelaere; J. Buylaert; P. Van den Haute

doi:10.1007/s10967-007-0522-5

Journal of Radioanalytical and Nuclear Chemistry

Volume/Issue:: Volume 272: Issue 2

Preparation and characterization of loess sediment for use as a reference material in the annual radiation dose determination for luminescence dating

Authors:

F. De Corte

F. De Corte Ghent University Laboratory of Analytical Chemistry, Institute for Nuclear Sciences Proeftuinstraat 86 B-9000 Ghent Belgium

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D. Vandenberghe

D. Vandenberghe Ghent University Laboratory of Mineralogy and Petrology, Geological Institute Belgium

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S. Hossain

S. Hossain Ghent University Laboratory of Analytical Chemistry, Institute for Nuclear Sciences Proeftuinstraat 86 B-9000 Ghent Belgium

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A. De Wispelaere

A. De Wispelaere Ghent University Laboratory of Analytical Chemistry, Institute for Nuclear Sciences Proeftuinstraat 86 B-9000 Ghent Belgium

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J. Buylaert

J. Buylaert Ghent University Laboratory of Mineralogy and Petrology, Geological Institute Belgium

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, and

P. Van den Haute

P. Van den Haute Ghent University Laboratory of Mineralogy and Petrology, Geological Institute Belgium

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Pages:: 311–319

Online Publication Date:: 27 Feb 2007

Publication Date:: 01 May 2007

Article Category:: Research Article

DOI:: https://doi.org/10.1007/s10967-007-0522-5

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Abstract

Loess sediment was prepared and characterized with well-established K, Th and U contents, and corresponding ⁴⁰K, ²³²Th and ^235,238U activities, intended for use as a reference material in the annual radiation dose determination for luminescence dating. To this purpose, loess was collected in Volkegem, Belgium, and — after drying, pulverizing and homogenizing — characterized via k₀-INAA and HPGe gamma-ray spectrometry. This led to 12 kg material with a grain size below 50 μm, with established K, Th and U homogeneity, with the ²³²Th and ²³⁸U decay series proven to be in equilibrium, and with the following K, Th and U reference data: K = 16.5±1.5 g·kg⁻¹ (⁴⁰K = 497±45 Bq·kg⁻¹); Th = 10.4±0.6 mg·kg⁻¹ (²³²Th = 42.2±2.5 Bq·kg⁻¹); U = 2.79±0.12 mg·kg⁻¹ (²³⁸U = 34.5±1.5 Bq·kg⁻¹; ²³⁵U = 1.59±0.09 Bq·kg⁻¹; ^235+238U = 36.1±1.7 Bq·kg⁻¹). These data were confirmed via comparison with the results from NaI(Tl) field gamma-ray spectrometry, thick-source ZnS alpha-counting and thick-source GM beta-counting (after converting all data to Gy·ka⁻¹). The reference material is available (as aliquots up to 200 g) from the Ghent Luminescence Laboratory to all interested luminescence dating laboratories upon motivated request.

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Journal of Radioanalytical and Nuclear Chemistry

Print ISSN:: 0236-5731

Online ISSN:: 1588-2780

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Journal of Radionalytical and Nuclear Chemistry
Language	English
Size	A4
Year of Foundation	1968
Volumes per Year	1
Issues per Year	12
Founder	Akadémiai Kiadó
Founder's Address	H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
Publisher	Akadémiai Kiadó Springer Nature Switzerland AG
Publisher's Address	H-1117 Budapest, Hungary 1516 Budapest, PO Box 245. CH-6330 Cham, Switzerland Gewerbestrasse 11.
Responsible Publisher	Chief Executive Officer, Akadémiai Kiadó
ISSN	0236-5731 (Print)
ISSN	1588-2780 (Online)